crypto: x86/aegis128 - convert to use AEAD SIMD helpers

Convert the x86 implementation of AEGIS-128 to use the AEAD SIMD
helpers, rather than hand-rolling the same functionality.  This
simplifies the code and also fixes the bug where the user-provided
aead_request is modified.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/Kconfig

@@ -310,7 +310,7 @@ config CRYPTO_AEGIS128_AESNI_SSE2
 	tristate "AEGIS-128 AEAD algorithm (x86_64 AESNI+SSE2 implementation)"
 	depends on X86 && 64BIT
 	select CRYPTO_AEAD
-	select CRYPTO_CRYPTD
+	select CRYPTO_SIMD
 	help
 	 AESNI+SSE2 implementation of the AEGSI-128 dedicated AEAD algorithm.